Robtex

Up: 194.121.208.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 194.121.216.0/22
Down right: 194.121.220.0/22

IP	Type	Hostname
194.121.216.146	PTR	static.kpn.net
194.121.216.248	PTR	static.kpn.net
194.121.217.57	A	mx.baaswijn.com
194.121.217.57	A	mail.baaswijn.com
194.121.219.219	A	mail2.mtmaritime.nl
194.121.222.1	PTR	194-121-222-1.de.kpn-eurorings.net
194.121.222.233	PTR	194-121-222-233.de.kpn-eurorings.net
194.121.223.58	PTR	194-121-223-58.de.kpn-eurorings.net